Nail driver



March 4 1924. 1,485,413

' O. J- JOHANSON NAIL DRIVER Filed Nov. 6, 1922 Olof d. Johanson www hPaienied Maag, 1924.

N ITED STA-rss OIIE' J'. JOEANSUN, OF BOSTON, 'MASSACHUSETIS NAIL Darm;

Application filed November 6, 1922. Serial No. 599,270.

To all whom it may concern.:

Be it known that I, Onor J. JoHANsoN, a subject of the King of Sweden,and resident of Boston, county of Suffolk, State of Massachusetts. haveinvented 'an Improvement in Nail' Drivers, of whichthe followingdescription, in connection withthe accompanying drawing, is aspecification, like characters onthe drawing representing like parts. A

This invention relates to implements for driving nails and has for someof its 0bjects to provide a h'and implement for this Durpose whichembodies novel means for transferring the nails from the reservoir tothe chute by which the are conductedy to the driving element an also toprovide a novel construction by which after the driver has begunits'nail-driving movement it can be returned to normal position' untilafter completing such movement thus insuring that e'ach nail will becompletel driven.

My device comprises the usua frame having a driving element, a chute forconducting the nails thereto, a nail reservoir, and means fortransferring the Anails from the reservoir to the chute. The meansemployed for this purpose is a magnetic element constructed so that itcan be moved into position so that one or more nails from the reservoirwill be attracted thereto, and may also be moved into position todeliver -the nails to the chute. The nails are dislodged from themagnetic element by delivering to the latter a blow of suflicient forceto jar the nails loose therefrom. This blow is herein delivered byproviding an abutment against which the magnetic element strikes duringits movement. A

In order to give an 'understanding of the invention I have illustratedin the drawings a selected embodiment thereof which will now bedescribed after which the novel features will be pointed outin theappended claims.

Fig. 1 is a vertical sectional viewr through a nail driver embodying myin vention.

Fig. 2 is a detail view showing the means i for .controlling the driver.

The device herein shown comprises a suitable fiame 1 having a handle 2by which it may be manipulated and moved over the surface 3 into whichthe nails are to be driven. The embodiment of the invention herein shownis specially designed for nail-y ing flooring in lplace but I wish it'under- 'i stood that the invention is adapted for various otherpurposes and is 'not confined to any particular nailing operation.

The driving element by which the nails are driven comprises a driver 4which is secured to a plunger 5 that operates in a v 'ding sleeve 6supported at one-'end o Vthe frame. This `driveris normally held in',

raised position shown in Fig. 1 by means of a spring 7 which encirclesthe shank. 5

and bears at one end against a shoulder 8- formed on the shank and atthe other end against a. tubular member 9 situated 'within the sleeve 6.Situated beneath the driver 4 is a guiding member 10 which is hereinshown as adapted to reston the surface 3 and `which thereby forms al-support for the frame, and which is also provided with a nail-deliverypassage 11 -situated directly in line with the driver 4 and throughwhich the nails 12 are driven. The upper end of the shank 5 is providedwith aha'ndle orhiob 13 by which the driver may be manually depressed. A

The nails 12 are delivered to the ldriver through the medium of a chute14 that may have any suitable or usual construction, said f chute havingthe usual nail-receiving slot 15 through which .the nails depend,thereby holding said nails in upright position.

The guiding member 10 is shown as having a positioning spring 16associated 'therewith, which forms a stop for the end nail,

12 and thus holds said nail in ition to bel acted upon bythe driver 4.is springis shaped to engage underneath the ,head of the nail and thushold the nail suspended until said nail is engaged by the-I driver. Thespring 16 yields as the driver descends thus allowing the nailto 'pass.downwardly through the passageway '11.-

, i7 indicates a reservoir to @nain nails,

such. reservoiri'having a cover 18 through which the nails may be deited therein;

For transferring the na' from the reser- 17 will be attracted theretoand is also adapted to be carried into a position to deliver such nailsinto the upper end of the chute 14. In the construction herein shownthis yloo wir 17 to the chum i4 i have provided a magnetic element ismounted 0n an .arm 20 that is pivoted to the frame at 21, said armoperating through, a slot 22 formed in -the housing for the reservoir17.

' lthe reservoir Means are provided for manually moving the magneticelement 19 whenever ,it is desiredto reload the chute and while variousdevices for this purpose'may be employed that herein illustrated isregarded as being entirelysatisfactory., The arm 20 is pivotally mougtedby being made' fast on a rock shaft 21 andthe latter has fast thereto anarm 23 which is connected -by a link 24 to one arm 25 -of an elbow leverpivoted to the frame at 26, the other arm 27 of said' elbow lever beingyconnected by a link 28 to one endf29 of a Atrigger or linger piece 30which in turn. is pivoted tothe frame at 31. The arm 20 is acted upon bya spring 32 which tends to hold the magnetic elementnetic member backinto the full line position Fig. 1 and said member will-carry with 1tthe nalls which have been attracted there- O .The strength of the spring32;is .Such that 1t Wlll bring the magnetic element against the stop33with a hammer-like blow and vcated in the drawings.'l

this blow will be suiiicient tov dislodge from said magneticelement-:the nails which are magnetically. held thereto, such" nailsfallinginto the upper end of the chute as indi The chute 14 is of theusual shape so that nails which fall into itwill naturally drop into aposition where they will. depend through the slot 1521s shown. Theloading of the chute, therefore, involves the act'o 56 ing it and thismayv be` done one Vor moref raising the linger lever 30 and Jthenreleasf times as necessary to'deliver `the desired number of nails intothe chute.

The finger piece 30 is situated beneath' the handle 2 and is thus inconvenient position to be manipulated" by the fore nger of the operator.

An important feature of this invention is the construction by which themagnetic ele- `ment Vwith the nails adhering thereto is brought upagainst the stop or rest 33 with a hammer-likelblow thereby jarring -thenails'from said element.

While l lhave herein shown a' tion which the blow which 'jarsthel'nai-ls `ron'i the magnetic element is secured by driving saidelement against a fixed. stop meenam yet the invention is notnecessarily limited to such construction as the blow for dislodging thenailsfrom the magnetic element may be derived by some other means.

Another -feature of the invention relates to the means for controllingthe driver whereby after the driver has once been The pin 3i .carries aspringmember 38A which is slightly longer than the width oi the slotbetween the serrated walls but is shorter than the widened portions 37of theD slot. When the driver is in its elevated. position the springmember38 occupies the widened upper end of the slot as shown in Fig. 2.As the driver starts downwardly said member is carried into the narrowerportion of the slot having the serrated edges 36 and as it passes intosaid portion of the slot the ends of the sprin are bent backwardly orupwardly, as s own by dotted lines Fig. 2. This spring when in thisposition functions as a ratchet to prevent return. movement of theplunger 5, said spring, however, permitting continued downward.movement. When the 'plunger has completedit's .downward stroke thespring passes in to the lower widenedend 37 of the slot and when in thisposition it resumes its straight shape. The plunger may then be elevated.and as it rises the ends of the s ring '-element. willbebent downwardlyan will function" as a ratchet to prevent downward movement .of theplunger while permitting continuedupward movement thereof.

With this device, therefore, the direction of the movement of theplunger can only be reversed when the plunger is at either started onits nail-driving movement it canend of its .stroke and, therefore, ifduring 'i epressed osition and cannot be raised un.

til it is given another blow to drive it to the lower limit of itsmovement. Such added blow will complete the driving of the nail .andthus with this arrangement the complete driving of every nail isinsured. While I have illustrated herein a selected embodiment of myinvention I do not wish. to be limited to the constructional feature@shown. I claim:

1. In a nail-driving implement, the combination with a driving element,of a reseri voir, a nail chute leading to the driving ele- '.ment andmeans for transferring nails from the reservoir to the chute, said meanscom- IBS prisin a. magnetic element, means to move said e ement intoposition to take nails from the reservoir by magnetic attraction, andmeans to give said element a blow sueient to dislodge the nailstherefrom.

` 2. In a. nail driver, the-combination with a driving element, of a.reservoir, a nail chute leading to the driving element and means fortransferring nails from the reservoir to the chute, said means comprisina magnetic element, means to move said e ement into position to takenails from the res. ervoir by magnetic attraction and then to move saidelement into the chute, and a stop for arrestin suddenly the movement ofthemagnetie e ement therebyto dislodge the nails therefrom.

3. In a nail driver, the combination with a driving eiement, of areservoir, a nail chute leading to the driving element and means fortransferring nails from the reservoir to the chute, said meanscomprising a pivotally-mounted magnetic element, means for moving saidelement into position to take nails from the reservior by tic atto' tactmid element,

traction, a ,y and a @op to arrest suddeni the retraing creby the maiismovement of mid element w will be ja therefro f d. a nail driver, thecombination with a guiding sleeve,'of a langer operating therein, adriver carrie by the plur, said sleeve having a slot which presentswidened ends, a projection extendirg n said plunger and -operatingin theot and a spring ratchet member carried by the projection and located insaid slot, said spring member having a. greater width of the slot butless length than the widened ends of the slot, whereby as the springmember is carried intothe narrow portion of the slot by the downwardmove?V ment of the. plu 1 y. the ends of the spring are bent backwa nIry and thereby' lookin the plunger against nward movement unti theplunger has comp eted its downward movement.

in testimony whereof, l have signed my name to thissition.

length than the

